ICD-10-CM Tabular Index · Chapter 14 · FY 2027 N60–N65
Disorders of breast (N60-N65) ICD-10-CM
The N60–N65 section covers disorders of breast with 79 ICD-10-CM diagnosis codes, of which 60 are billable in fiscal year 2027. The section is organized into the 6 code ranges listed below.
✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
6
Code Ranges
79
Diagnosis Codes
60
Billable Codes
N60–N65
Code Range
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
disorders of breast associated with childbirth O91O92
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the N60–N65 Code Range
These breast conditions include benign tissue changes, inflammation, enlargement, lumps, and changes in reconstructed breasts.
N60 separates benign breast changes by type, including cysts and changes to breast ducts. N61 separates inflammatory conditions by whether they involve an abscess or granulomatous mastitis. N62 identifies breast enlargement.
N63 identifies an unspecified breast lump, with subdivisions for the right or left breast and specific areas of the breast. N64 groups other breast disorders by condition or symptom, including nipple problems, breast pain, and milk discharge not associated with childbirth. N65 separates deformity from disproportion of a reconstructed breast.
Questions About This Page
How many codes are in the N60-N65 range?
The N60-N65 range contains 79 ICD-10-CM diagnosis codes in FY 2027. 60 of them are billable, and the rest are category headers that organize the section.
What conditions does N60-N65 cover?
The range covers disorders of breast. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Gynecomastia
Hypertrophy of breast NOS
Massive pubertal hypertrophy of breast
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
mechanical complication of breast prosthesis and implant T85.4
